覆盖datatables.js搜索行为 [英] Overriding datatables.js search behavior
问题描述
这里有关于此主题的一些问题，但是没有一个关于我的确切情况。
There are already several questions here on SO on this subject, however none is about my exact situation.
我有一个包含2列的数据表，其中一个包含文本输入字段，另一个选择。数据表搜索功能的当前行为是在整个选定的HTML中进行搜索。我想要的行为是仅搜索选定的选项。
I have a datatable with 2 columns, one contains text input field and the other a select. The current behavior of datatables' search functionality is to search in the entire select HTML. The behvior I want is search only the chosen option.
我知道我们可以覆盖/拦截搜索/过滤器事件，即
I'm aware we can override/intercept the search/filter events, ie
$('#mapping-table_filter input', data_table.table().container())
.off('.DT')
.on('keyup.DT cut.DT paste.DT input.DT search.DT', function (e) {
data_table.search(...).draw();
});
// or
data_table.on('search.dt', function () {
});
但这自 .search 起无济于事不接受回调。
But this does not help since .search does not accept a callback.
JSFiddle
https ：//jsfiddle.net/0oabx2mr/
JSFiddle https://jsfiddle.net/0oabx2mr/
如果您搜索第一，第二或第三中的任何一个，则两行仍然可见。我希望能够搜索第二和第三，并且只获取相关行。
If you search for any of "first", "second" or "third" both rows are still visible. I want to be able to search for "second" and "third" and only get the relevant row.
推荐答案
结构简单更改，您的示例可能看起来像这样：
With slight architecture changes, your example may look like that:
var srcData = [
['firstOption', 'secondOption', 'thirdOption'],
['firstOption', 'secondOption', 'thirdOption'],
['firstOption', 'secondOption', 'thirdOption'],
['firstOption', 'secondOption', 'thirdOption']
];
var dataTable = $('#mytable').DataTable({
sDom: 't',
data: srcData,
columns: [{
title: 'Options',
render: (data, type, row) => '<select>'+row.reduce((options, option) => options += `<option value="${option}">${option}</option>`,'')+'</select>'
}]
});
var needle = null;
$.fn.DataTable.ext.search.push(
(settings, row, index) => $(dataTable.cell(`:eq(${index})`,':eq(0)').node()).find('select').val().match(needle) || !needle
);
$('#search').on('keyup', event => {
needle = $(event.target).val();
dataTable.draw();
});
<!doctype html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css">
</head>
<body>
<input id="search"></input>
<table id="mytable"></table>
</body>
</html>
这篇关于覆盖datatables.js搜索行为的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
